Articles tagged

#chiffrement

A processor chip with a glowing padlock on it, with motion streaks showing data rushing through it, illustrating faster ChaCha encryption in the Linux kernel on AVX-512 processors

SoftwareNovember 9, 2026

Linux 7.5: kernel ChaCha AVX-512 code up to 99% faster on AMD Zen 5

Linux 7.5 is set to rewrite ChaCha's AVX-512 code, which was tuned for early Intel Skylake chips, and Phoronix reports gains of up to 99% on AMD Zen 5. The kernel's cipher was still tuned for chips that slowed down the moment you used AVX-512.

A beige 1990s desktop computer running a vintage browser, next to a modern tower quietly crunching numbers, with an expired certificate warning on the CRT screen.

SecuritySeptember 8, 2026

A researcher cracked a 1990s CA's 512-bit RSA keys in 61 hours

On 7 September 2026, a developer published the private keys of two 512-bit roots that shipped with Netscape 4.51 in 1999, factored in 61 hours on a desktop PC. Compute always catches up with a key size — the only question is when.

Linux 7.5: kernel ChaCha AVX-512 code up to 99% faster on AMD Zen 5

A researcher cracked a 1990s CA's 512-bit RSA keys in 61 hours

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